Bluetooth technology is a low-power, low-cost wireless technology for short-range radio communication between electronic devices. (i.e., mobile phones, laptops, PDAs, stereo headsets, MP3 players, digital cameras, PC and computer peripherals). Bluetooth replaces peripheral cables. It is basically a wireless USB. The Miniblue BAE-800 Bluetooth Headset offers wireless freedom in the most discreet way. It is one the smallest and lightest headset you could find in the market. Comfortably designed to be worn in either left or right ear for clear audio with adjustable ear hook. The BlueAction Bluetooth hand-free headset BAE-800 is universally compatible with all Bluetooth enabled cell phones, PDA and other devices, including iPhone. The headset is latest Bluetooth® version 2.0 compliant and equipped with with HFP and HSP. BAE-800 is built with echo cancellation and noise reduction functions. An active boom microphone initiates Push-to-talk calls from the headset and answers and end calls. The charger and user manual are included in the manufacturer's blister retail package. Talking time is up to 8 hours and standby time is up to 200 hours. Dimensions - 30mm(L) X 14mm(w) X 10mm(H).